If the archive is damaged, you can use the command line 7z t GP.7z.001 to test the integrity of all parts. 3. File Structure Knowledge
Ensure GP.7z.001 , GP.7z.002 , and GP.7z.003 are all located in the same folder before extracting. GP.7z.003
Open only GP.7z.001 with 7-Zip or a similar file archiver (like WinRAR or PeaZip). The software will automatically detect the subsequent .002 and .003 files to reconstruct the original data. If the archive is damaged, you can use